Before I go any further there are several reasons why “what she did” (if she really did it) are irrelevant:

Cretella is a religious fundamentalist for whom science takes a back seat to faith.

Cretella is not licensed to practice medicine and has not been licensed for an indeterminate period of time. We do not know if she has kept up with the literature.

Even if she has kept pace with advances in medicine, she is not qualified to even assess gender dysphoria let alone speculate on how it should be treated (in conformity with the catechism of the Catholic Church of course). She lacks a board certification in psychiatry.

Cretella is a proponent of the pseudoscience of conversion therapy which cannot be proved safe and effective. In fact, at least anecdotally, it is toxic and ineffective.

There are probably other reasons but you get the idea.

"I had one patient we'll call Andy," Cretella explained. "Between the ages of 3 and 5, he increasingly played with girls and 'girl toys' and said he was a girl."

Andy should have been immediately referred to a clinician who specializes in juvenile gender dysphoria.

The treatise on medical malpractice continues:

Cretella referred Andy and his parents to a family therapist, noting that sometimes mental illness of a parent or abuse of the child are contributing factors to gender confusion. Yet what is more common is that the child has internalized a false belief based on an incorrect perception of family dynamics, she said.

No one with experience in this area calls this “gender confusion.” That is a construct of the Church. A family therapist is not qualified to evaluate a child for gender dysphoria. Wanna bet that he or she is a member of the Catholic Medical Association? Cretella never cites peer-reviewed research to support her claims and for good reason. That “family dynamics” gibberish is just that: Gibberish.

"In the middle of one therapy session, Andy put down a toy truck, held onto a Barbie, and said, 'Mommy and Daddy, you don't love me when I'm a boy.'"

When Andy was 3 years old, his sister with special needs was born. Because of her speical needs, his sister demanded much more attention from his parents. Andy interpreted this reality as "Mommy and Daddy love girls. If I want them to love me, I have to be a girl." …

That does not sound like a true story. Even if it is, a true professional would have elicited the same response. However, if the child was gender dysphoric then the experienced clinician would be able to evaluate what was going on. A family therapist hasn't a clue. If the story is true then Cretella played craps with a kid's life. One must then ask if she did the same thing with other children, some of whom might have been in severe distress. There is a reason that gender dysphoric children are a risk for self-harm.

Cretella, lacking in the necessary training and experience, referred a kid to someone else lacking in the necessary training and experience and she did so, not because of medical science, but because of the tenets of the Catholic Church. The malpractice is also child abuse.

She stressed that no person is "assigned" sex at birth; it is determined by one's DNA and stamped in every cell in the body. Furthermore, she added, hormones and surgery cannot alter the nearly 6,500 genetic differences between men and women.

What does that have to do with gender? The American Academy of Pediatrics (the real professional peer association) and the American Psychiatric Association both concur that sex and gender are different constructs and that, in a small minority of people, the two are incongruent.

Putting children on hormone suppressants, also known as puberty blockers, and then cross-sex hormones after that, is nothing short of child abuse, Cretella added.

She reaches that conclusion, not from research or study, but from a need to conform everything to the teachings of the Church. She is no better than a shaman.

But the medical establishment is nevertheless totally behind the practice.

That should tell her something.

Cretella noted in the video that The American Academy of Pediatrics issues health warnings to teenagers about getting tattoos because of their permanence, citing the potential for scarring. They do so while enthusiatically <sic> backing gender transition hormones for individuals who assert they are the opposite sex.

Gender affirmation is a necessary medical intervention for some people. There is no benefit from a teen getting a tattoo. Does Cretella really believe that people are too stupid to appreciate the difference?

"To indoctrinate all children from preschool forward with the lie that they could be trapped in the wrong body disrupts the very foundation of a child's reality testing," Cretella said.

"If they can't trust the reality of their physical bodies, who or what can they trust? Transgender ideology in schools is psychological abuse that often leads to chemical castration, sterilization, and surgical mutilation."

Non-conformity with the Church=a lie. “Who or what can they trust?” They sure as hell cannot trust Cretella and being transgender is not an ideology. An ideology is a belief system, like Catholicism. It is based on faith. Being transgender to mitigate the effects of gender dysphoria is thoroughly documented in the literature. Unlike belief systems, science is based on evidence.